add: unit and integration testing

app/node_modules/@babel/helper-module-transforms/lib/lazy-modules.js

@@ -0,0 +1,31 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.toGetWrapperPayload = toGetWrapperPayload;
+exports.wrapReference = wrapReference;
+var _core = require("@babel/core");
+var _normalizeAndLoadMetadata = require("./normalize-and-load-metadata.js");
+function toGetWrapperPayload(lazy) {
+  return (source, metadata) => {
+    if (lazy === false) return null;
+    if ((0, _normalizeAndLoadMetadata.isSideEffectImport)(metadata) || metadata.reexportAll) return null;
+    if (lazy === true) {
+      return source.includes(".") ? null : "lazy";
+    }
+    if (Array.isArray(lazy)) {
+      return !lazy.includes(source) ? null : "lazy";
+    }
+    if (typeof lazy === "function") {
+      return lazy(source) ? "lazy" : null;
+    }
+    throw new Error(`.lazy must be a boolean, string array, or function`);
+  };
+}
+function wrapReference(ref, payload) {
+  if (payload === "lazy") return _core.types.callExpression(ref, []);
+  return null;
+}
+
+//# sourceMappingURL=lazy-modules.js.map